Here we go again. Last week, the FDA detained a shipment of goat cheese from French producer Fromagerie Jacquin, declaring that the ash coating was not a permitted colorant. This ash, made by carbonizing vegetable matter, is what makes the dark ribbon in Morbier and the inky cloak on the Loire Valley’s famous Sainte-Maure and Valençay, which the French have been savoring since the days of Napoleon.